Circumferentially traveling thrust tire mounting machine



April 3, 1951 Y J. H. EBERLY cmcuumasuwmu TRAVELING THRUST TIRE uouu'rmcMACHINE 9 Sheets-Sheet 1 Filed April 5, 1947 vvv a I l N INVENTOR. M261% awa A 7'7'0R/V6') J. H. EBERLY CIRCUMFERENTIALLY TRAVELING THRUSTApril 3, 1951 TIRE MOUNTING MACHINE 9 Sheets-Sheet 2 Filed April 5, 1947l|||| llll l llllllllll-l. ||Ill INVENTOR. AN 5% 86M Arrolqzvsv April 3,1951 J. H. EBERLY 2,546,988

CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTING MACHINE Filed April 5.1947 9 Sheets-Sheet 3 IN VEN TOR.

C ATTORNEY 7 Aprll 3, 1951 J. H. EBERLY 2,546,988

' CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTING MACHINE Filed April5, 1947 V 9 Sheets-Sheet 4 INVENTOR. J0-v 5&4 56M AI'I'OR/VEY April 3,1951 J. H. EBERLY CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTINGmomma:

9 Sheets$heet 5 Filed April 5, 1947 INVENTOR. NV Sam m 854 0? April 3,1951 J. H. EBERLY CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTINGMACHINE 9 Sheets-Sheet 6 Filed April 5, 1947 INVENTOR. E g (Z 4 vfi E IA TI'QR/VE y April 3, 1951 J. H. EBERLY 2,545,988

CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTING MACHINE Filed April 5,1947 '9 Sheets-Sheet 7 CL v w M a x r \B N N N N N W 1 a I 3 jlE 15 Q NATTUR/VEY Apnl 3, 1951 J. H. EBERLY 2,546,933

CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTING MACHINE Filed April 5,1947 9 Sheets-Sheet 8 :EIE-n- E E 5.

INVENTOR. floi/w afium/ 54 ,6

April 3, 1951 J. H. EBERLY 2,546,988

CIRCUMFERENTIALLY TRAVELING THRUST TIRE MOUNTING MACHINE Filed April 5,1947 9 Sheets-Sheet 9 IIE E E C; ATTO/Q'NEY' 7 Patented Apr. 3, 1951UNITED STATES assess 'lENT QFFlCiil CIRCUMFEREN'EIALLY TRAVELING THRUSTTIRE MOUNTING MACHHNE Application April 5, 1947, Seriai No. 739,6'4'4 11Claims.

My invention relates broadly to tire mounting machines and moreparticularly to an improved construction of mechanism for mounting tirecasings on wheel rims.

One of the objects of my invention is to provide a time and labor savingmachine for mounting tire casings on wheel rims without the abuse orinjury of the tire casing.

Another object of my invention is to provide an improved construction oftire spreading tool for handling and mounting tire casings with respectto wheel rims.

Another object of my invention is to provide a construction of poweroperated the mounting machine which permits a tire casing to bemechanically spread and mounted upon a wheel rim with minimumexpenditure of time and with a high degree of eificiency.

Still another object of my invention is to provide anovel constructionof clutch mechanism for tire mounting machines for controlling theoperation of a power actuated tire mounting ma chine for rapidlyspreading and mounting tires upon wheel rims.

Still another object of my invention is to pro vide an arrangement oftire mechanism for tire mounting machines operative to automaticallyshift a wheel rim and partially engaged tire from a convenientvertically disposed position to a horizontally disposed position inwhich the the easing may be readily spread and mounted in position upona wheel rim.

Other and further objects of my invention reside in an improvedconstruction of tire inount ing machine of wide application in thevehicle industry as set forth more fully in the specificationhereinafter following by reference to the accompanying drawings inwhich:

Figure 1 is a partial side elevational view of the tire mounting machineof my invention and showing a wheel rim and associated hub placed inposition upon the tire mounting machine with a tire casing suspendedthereon preparatory to the commencement of the tire mounting operation;Fig. 2 is a side view of the tire mounting machine similar to the Viewillustrated in Figure 1, but showing the wheel rim and tire tiltedupwardly to a horizontal position preparatory to the tire mountingoperation; Fig. 3 illustrates the tire mounting machine raised tovertical position preparatory to a tire mounting operation; Fig. 4 is aview illustrating one of the first steps in mounting a tire casing onthe wheel rim with the machine in tire mounting position; Fig. 5 is atop plan view showing the spreader arms at the commencement of theoperation shown in Fig. 4 for slipping one side of the tire casing onthe tire rim; Fig. 6 is a view illustrating the next successive step tothat illustrated in Figs. 4 and 5 where one side of the tire casing isin the process of being engaged over the tire rim; Fig. 7 is a top planview of the tire mounting step illustrated in Fig. 6 with the spreaderarms further advanced around the tire casing; Fig. 3 illustrates thenext succeeding step in mounting the tire casing on the tire where thespreader arms have completed a revolution for spreading the tire casingwith respect to the tire rim; Fig. 9 is a top plan view of the spreaderarms and casing at the sequence illustrated in Fig. 8: Fig. 1G is asectional view illustrating the next succeeding step in spreading thetire casing where one wall of the casing has been engaged over the rimand where the opposite wall of the casing is about to be engaged overthe rim; Fig. 11 is a top plan view of the tire illustrated in Fig. 1!)showing the position of the spreader arms as they commence the finalspreading operation for stretching the tire casing over the rim; Fig. 12is a cross sectional view showing the completed spreading operation inwhich both sides of the tire casing are engaged over the tire rim; Fig.13 is a top plan view of the sequence illustrated in Fig. 12; Fig. la isa top plan view of the complete tire mounting machine showing therelationship of the tire spreading arms and the clutch control mechanismfor controlling the operation of the machine; Fig. 15 is an enlargedside elevational view of the clutch mechanism and the associatedoperating parts in the tire mounting machine; Fig. 16 is a longitudinalsectional view through the clutch mechanism and associated parts takensubstantially on line lGl6 of F1". 15; Fig. 17 is a detailed view of thetwo active parts which function in the release of the clutch mechanism;Fig. 18 is an end elevational view of the clutch mechanism andassociated parts, the view showing the drive shaft and clutch controllever in transverse section; Fig. 19 is a cross-sectional view of thetwo spreader arms used in the tire mounting machine and showing themanner in which the arms are interengaged for mutual rotation inperforming a spreading operation; Fig. 20 is a top plan view of one ofthe spreader arms; Fig. 21 is a longitudinal sec tional view through thespreader arms shown in Fig. 20 taken substantially on line 2 l-2i ofFig. 20; Fig. 22 is a plan view of the coacting spreader arm employed inthe assembly shown in Fig. 19; Fig. 23 is a longitudinal sectional viewtaken subtubes and t8 extend.

3 stantially on line 23-23 of Fig. 22; Fig. 24 is a detailedcross-sectional view illustrating the coaction of the clutch controloperating shaft and the housing of the clutch control mechanism; Fig. 25is a fragmentary side elevational view of the assembly illustrated inFig. 24; Fig. 26 is a cross-sectional view taken substantially on line26-26 of Fig. 25; Fig. 27 is a fragmentary perspective view of theclutch parts as they appear in the tilted position of the tire mountingmachine and before the clutch control rod is pushed in for effecting anengagement of the clutch; and Fig. 28 is a perspective view of theclutch mechan'ism in engaged position.

My invention is directed particularly to a machine for mounting 24 x7.59 tires on spoke wheels without using spreading and forcing handtools, and performing the mounting work much easier and without abuse tothe tire. While I have shown a machine adapted for 24 x 7.50 tires merereplacement of the size of the spreading arms serves to adapt themachine for mounting tires of any size. The drawings illustrate themachine and especially the functions of the spreader arms in thesuccessive positions thereof.

The frame of the machine is made up from 2" pipe posts I extendingvertically from floor plates 2 welded together with 3" channels 3 and1%" x flat steel transverse braces Reference character 5 designates anelectric motor of 1750 R. P. M. driving a small sheave 6 which drivesbelt I over an idler or tensioning wheel 8 to a 16" sheave 9 connectedto speed reducing gear arranged in the housing designated at It. Thespeed reducing gear in housing It drives an HT pitch sprocket wheel IIwhich drives a sprocket chain I2 engaging a sprocket I3. Sprocket i3drives shaft Hi to which is attached llT bevel pinion I5 which drives41T top bevel ring gear I5 and 41'! bottom bevel gear Il located in thehousing IS.

The housing It is tiltable in a vertical plane with respect to the framesupport formed by the posts I about a substantially horizontal axis. Thehousing i8 is supported on tubular trunnions connected with oppositesides thereof and extending in a substantially horizontal axis andjournaled in bearings formed by angle members 63 and 59. The anglemembers 63 and 69 are supported adjacent the tops of the pipe posts iand serve as bearings into which the hollow The hollow tube 55 serves asa housing for rotatable shaft ill and connects to one side of housingI3, and revolves within the bearing formed by angle member 63. Tubularmember 56 which revolves in angle member 65 connects to an angle member6| at the end thereof adjacent housing I8, which angle member isconnected with housing l8, thus forming a substantial transverse framerevolvable in trunnion-like manner with respect to bearings 68 and 69.Thus the housing I8 which supports the driven shaft 20 may be revolvedin the angle members 88 and 69 for moving shaft 20 through a distance ofsubstantially 90.

To further brace the housing structure I provide a pair of pivotallyconnected links represented at 64 and 65 where link 64 is connected tothe lower end of housing I8 and wherein link 65 is pivotally connectedat 65 with the other end of link (54. The other end of link 65 ispivotally connected at 8'. with the remote end of the housing, therebyconsiderably strengthening the assembly while guiding the assembly asthe assembly moves throughout the qua-drantal distance between thehorizontal position and the vertical position.

In order to further strengthen the trunnionlike assembly I provide abrace 63 extending between one end of housing I8 and angle member BIwhich connects with trunnion 69.

The hollow shaft I9 is welded to the underside of ring gear I6, whilethe shaft 20 is welded to the top side of ring gear I I, thus giving thehollow shaft It and the shaft 26 opposite rotation. The shaft 23 issupported at the top with a bronze bushing and at the bottom with aroller bearing 22. The hollow shaft I9 has a bronze bushing 23 and asteel bushing 24, while the drive shaft I4 is provided with a rollerbearing 25 and a bronze bushing 26. To take care of the end thrust towhich shafts I9 and 20 may be subjected. when mounting the wheel Iprovide two sets of steel washers 21 above and below the ring gearsIII6, with a bronze washer 23 interposed between the steel washers ofeach of the sets of steel washers as shown. The set of steel washers 2'!adjacent the ring gear I6 is mounted in a recessed portion of housingI8, while the set of steel washers adjacent the ring gear I1 is mountedadjacent the roller bearing 25 for withstanding the end thrust on theshafts I9 and 28.

Referring to the manipulation of the machine, the housing I8 with thehollow shaft I9 and the shaft 29 are tilted to horizontal position byhand as shown in Figure 1. The spoked wheel rim 4G is pushed on thehollow shaft I9 and the tire 29 hung on the wheel rim 46 in such aposition as will allow the conventional valve stem to fit theconventional valve stem in wheel rim 4B.

The tire, wheel, shafts and housing are then lifted into position asshown in Fig. 2. This lifting is done by power carried out in thefollowing manner: the rod 36 connected to clutch pin 3I associated withretarding spring 42 is pushed in and the machine started by sliding andpushing down reversing switch treadle 32 controlling the electric powercircuit to the driving motor 5. The clutch catching jaw 33 on chainsprocket I3 will perform the lift. When the lift is completed, theclutch pin 3| is automatically pushed out of mesh, the position of thetire and wheel rim 46 is held locked by the brace 54 through the rockinglever 35 as shown in Fig. 14. Rocking lever 35 is pivoted at 35a on oneof the channels 3 and is controlled by lever 10. Lever NJ is movablethrough bracket II attached to channel 3. Coil spring I2 operates tomove the rocking lever 35 in position to lock brace 64 in position tomaintain the tire, wheel, shafts and housing I 8 in lifted or verticalposition.

The spreading arm 3t carrying roller or camlike member 36a is now put onthe hollow shaft I9, interconnecting the keyway Illa in the shaft andthe keyway 360 in the hub 36b of the arm by a key I3. Then the other arm31 with square aperture 310 in hub 37b is slid on thecorrespondingly-shaped end 26a of shaft 20 and thereby keyed to turnwith the shaft.

The lower bead of tire 29 is pushed on by moving arms 39-31 to dottedposition as shown in Fig. 14 and the dropping the bead of the tire overthe rim. The successive positions of the tire spreading arms 3E3'I havebeen illustrated commencing with Fig. i and extending in sequencethrough Figs. 6, 8, 10 and 12. The corresponding positions of the tirespreading arms 363I for each of the sequential positions illustrated areshown in plan view in Figs. 5, 7, 9 and are illustrated clearly in Fig.19.

a 13 respectively. The arms 36 and 31' move with the positively drivenshafts l9 and 2t, respectively.

I The sequence of steps will be clarified by observing that in Fig. 1the wheel rim pushed on the hollow shaft It) by hand. Next, place thetire 29 on the wheel rim 46 and hold it in position by hand. Then startthe machine to lift wheel 45 and tire 29 into horizontal positionillustrated in Fig. 3. Put on the spreading arms 35 and 37. Hold thetire in position as shown in Fig. 4 with operator at right hand side ofmachine looking at Fig. 4.

In Figs. 4-5 the spreading arms 38 and 3? have started their rotativepath under positive power delivered by rotating shafts It and 29 drivenby ring gears l6 and [1.

In Figs. 6-7 the spreading arms 36-37 have moved half way around and thetire is held down as shown at right side looking at the right hand sideof the machine as shown in Fig. l.

In Figs. 8-9 the spreading arms 36-31' have completed the turn and thelower bead of the tire has dropped below the top of the rim of the wheelrim 48.

In Figs. 10-11 the spreading arms 36-31 have been turned to the startingposition. The upper bead of the tire 29 is hooked down below the rims ofthe roller or cam-like members 36a and 31a of the spreading arms 36-47with a light tool, and the tire 29 is held by hand until the arms 3s s1start to move again.

In Figs. 12-13 the spreading arms 33-31 have completed the turn and thetire 23 has slipped down between the rims of wheel rim is.

The next operation is to return the spreading arms 363l to the positionand take them away from the shafts l9 and 20.

Throughout these operations the wheel rim 4% is fixed against rotationby angle member 15 fixed to housing 18 and projecting between the spokesof the wheel rim 45 and in abutment therewith.

The tube valve stem of the inner tube of the tire is pulled throughwheel rim 4% in conventional manner. The conventional air hose is heldto the valve to fill the tube partly with air. The conventional valvenut is then screwed on and the filling of the inner tube with aircontinued to the specified inflation pressure of about 45 pounds. Theconventional valve cap is then put on. The machine is then tilted downby operat ing lever is to disengage the brace 64. The wheel rim with thetire mounted thereon is then removed in a substantially horizontaldirection.

It will be observed that the arms 36 and 3 each carry pivotally mountedrollers or cam-like members and 37a in the tips thereof. Spe cialattention is called to the shape of the tip 43 on arm 35 and the shapeof the tip 44 on arm 3'! in the form of cam-like members. These camliketips 43 and are preformed for the special purpose of supporting the beadof the tire 29 while the arms 36 and 37 perform their movement to rollthe tire on the wheel rim. The camlike members 36a and 3617 are eachpivotally mounted in the yoke-like ends of arms 36 and 31.

Figs. 19-23 show the arms 35 and 31 and the roller or cam-like members35a and 31a in the tips thereof and the the cam portions thereof at 43and 44 in more detail. The ooaction of the hub' portions 352) and 31b ofthe arms 33 and 3'! In order to return the arms 36 and 3"! to startingposition the direction of rotation of the mechanism is reversed. Forthis purpose the main switch in casing 38 is controlled by the reversingswitch treadle 32 cooperating through lever 39. The reversing switchtreadle rod 39a and spring 40 is provided for restoring the reversingswitch treadle 32 to normal position from the positions to which it ismoved.

I also provide a tilting stop bracket 41 attached to the tiltableassembly and adapted to abut in either of two limiting positions withthe frame of the apparatus, for limiting the substantially horizontalposition to which the tiltable assembly may be moved as shown in Figs. 1and 2.

In order to clarify the lifting operation reference is made to Figs. 15and 16 from which it will be seen that when the clutch rod 30 with theangle member A! secured thereto and hub 48 is pushed to the right,movement limited and guided by the cotter pin 5| is permitted to thedotted line position G9 shown in Figs. 15 and 27. The machine is startedby sliding and pushing down reversing treadle 32 closing the powercontrol circuit through the switch in casing 38 to the driving motor 5.One of the two jaws 9.3 attached to sprocket wheel I3 engages the clutchpin 3| whereby the tiltable assembly I?! with the driven shafts is and25 associated therewith revolve to the vertical position shown in Fig.2, making the quarter turn and completing the lift. At this point theclutch pin 3| is moved back out of mesh with the jaws 33.

The release of the clutch pin 3| is as follows: The angle 4? is taperedat the lower side, which slides off the slanted release block 59, Fig.1'7,

when the quarter turn is carried out as will be explained later. Thisfinishes the activity of the clutch, to be repeated with each succeedingtire operation.

The spring 42 attached to the tubular housing 55 helps to stabilize themovement of the clutch pin 3|. The clutch rod 30 slides loosely inbracket 45 which extends from trunnion member 60. Reference characters52 and 53 designate the brackets which support the clutch pin 3 I.Reference character 56 designates a thrust key connecting the hub 48 tothe pin 3! and insuring stabilized movement of the pin. The slantedrelease block 59 is Welded to the angle 54, which is supported by thechannel 3.

The perspective views of Figs. 27 and 28 will clarify the operation ofthe clutch mechanism.

Fig. 27 is a perspective view of the clutch parts as they appear in thetilted position of the machine wherein the clutch is not as yet pushedin for engagement. The dotted lines indicate the path of movement of theclutch pin 3| actuated the angle i? and the rod 39 to become engaged bythe jaws 33 on the sprocket wheel I3 to lift-the tilting part of themachine into a vertical position.

During this lifting period the clutch moves with the housingapproximately and will terminate the movement in the position as shownin Fig. 28, where the angle 47 has met the sliding block 50 which pushesthe angle ll and clutch pin 3| back out of reach of the jaws 33 on thesprocket wheel l3.

In the perspective view of Fig. 28 the spring 42 is shown with the endof the first convolution welded to the tube 55. The other end of springt2 extends behind the clutch pin 31, applying tension on the pin tostabilize and render more positive its movements. The spring 42 is alsoillustrated in Fig. 27.

The tube valve of the tire is adjusted and the tire pushed down using atire tool to hook the bead over the rim at the starting position withthe coaction of the cam-like members in the ends of the movable arms 35and 3?. The spreading arms 35 and 3? spread the upper bead until thetire falls into the wheel rim it. Tire, wheel and shafts are now tiltedback to starting position by lifting the lever E6 to disengage the latchestablished between rocker arm 35 and brace 64. The mounted tire andwheel are then removed from the machine, the tube filled to properpressure, valve checked,-valve cap screwed on and the operation isfinished.

The tire mounting machine of my invention has proven highly practical inits manufacture, production and operation and while I have described themechanism of my invention in certain preferred embodiments I realizethat modifications and improvements may be made and I desire that it beunderstood that I intend no limitations upon my invention other than maybe imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is as follows:

i. A tire mounting machine comprising a supporting frame structureincluding a pair of trunnion-like spaced supports, a tire mounting framestructure having a pair of transversely extending cylindrical membersprojecting therefrom and journaled in said trunnion-like spaced supportson said supporting frame structure and carrying a shaft member thereon,one of said members being tubular, said tire mounting frame structureand shaft member being movable from a position in which said shaftmember extends in a substantially horizontal position to a position inwhich said shaft member extends in a substantially vertical direction, adriving motor carried by said supporting frame structure, a driven shaftconnected with said driving motor and extending through said tubularmember, and means for driving said shaft member from said driven shaft.

2. A tire mounting machine comprising a supporting frame structureincluding a pair of trunnion-like spaced supports, a tire mounting framestructure having a pair of transversely extending cylindrical membersprojecting therefrom and journaled in said trunnion-like spaced supportson said supporting frame structure and carrying a pair of shaft membersthereon one of said cylindrical members being tubular, said tiremounting frame structure and shaft member being movable from a positionin which said shaft member extends in a substantially horizontalposition to a position in which said shaft member extends in asubstantially vertical direction, a driving motor carried by saidsupporting frame structure, a driven shaft connected with said drivingmotor and extending through said tubular member, and means for drivingsaid shaft member from said driven shaft.

3. In a tire mounting machine, a supporting frame structure including apair of trunnion-like spaced supports, a tire mounting frame structurehaving a pair of transversely extending cylindrical members projectingtherefrom and journalled in said trunnion-like supports, a rotatableshaft member carried by said tire mounting structure, a rotatablecoacting sleeve surrounding said shaft member and carried by said tiremounting frame structure one of said cylindrical members being tubular,a driving motor on said supporting frame structure, means operated bysaid driving motor for shifting said tire mounting structure includingsaid rotatable shaft member and coacting rotatable sleeve from asubstantially horizontal position to a substantially vertical position,driven shaft connected with said driving motor and extending throughsaid tubular member, and means for driving both said shaft member andsaid coacting sleeve from said driven shaft.

4. A the mounting machine comprising a supporting frame structure,including a pair of trunnion-like spaced supports; a tire mounting framestructure havin a pair of transversely extending cylindrical membersprojecting therefrom and journaled in said trunnion-like spaced supportsfor limited tilting movement with respect to said supporting framestructure one of said cylindrical members being tubular, a rotatableshaft mechanism carried by said tiltable frame structure, a prime movercarried by said supporting frame structure, means connected between saidprime mover and said tiltable auxiliary frame structure for elevatingsaid rotatable shaft mechanism from a substantially horizontal positionto a substantially vertical position, a drive shaft connected with saidprime mover and extending through said tubular member, and means fordriving said rotatable shaft mechanism from said drive shaft.

5. A tire mounting machine comprising a supporting frame structure,including a pair of trunnion-like spaced supports, a tire mounting framestructure having a pair of transversely extending cylindrical membersprojecting therefrom and journaled in said trunnion-like spaced supportsfor limited tilting movement with respect to said supporting framestructure one of said cylindrical members being tubular, a rotatableshaft mechanism carried by said tiltable frame structure, a prime movercarried by said supporting frame structure, means connected between saidprime mover and said tiltable auxiliary frame structure for tilting saidrotatable shaft mechanism from a substantially horizontal position to asubstantially vertical position for effecting a tire mounting operation,a driven shaft connected with said prime mover and extending throughsaid tubular member, means for driving said shaft mechanism from saiddriven shaft and clutch mechanism for governing the sequence of tiltingand tire mounting operations.

6. In a tire mounting machine a supporting frame structure including apair of trunnion-like spaced supports, a prime mover carried by saidframe structure, a tire mounting frame structure having a pair oftransversely extending cylindrical members projecting therefrom andjournaled in said trunnion-like spaced supports and tiltably carried bysaid supporting frame structure one of said cylindrical members beingtubular, shaft mechanism carried by said tire mounting frame structureand tiltable from a substantially horizontal position to a substantiallyvertical position, means extending through said tubular member andinterconnecting said prime mover and said tire mounting frame structurefor tilting said shaft mechanism to a substantially vertical positionand means operated by said prime mover while said shaft mechanism is insubstantially vertical position for efiecting a tire mounting operation.

7. In a tire mounting machine a supporting frame structure including apair of trunnion-like spaced supports, a prime mover carried by saidframe structure, a tire mounting frame structure having a pair oftransversely extending cylindrical members projecting therefrom andjournaled in said trunnion-like spaced supports and tiltably carried bysaid supporting frame structure one of said cylindrical members beingtubular, shaft mechanism carried by said tire mounting frame structureand tiltable from a substantially horizontal position to a substantiallyvertical tiremounting position, means extending through said tubularmember and interconnecting said prime mover and said tire mounting framestructure for tilting said shaft mechanism to a substantially verticalposition and. tire mounting means operated by said shaft mechanism fromsaid prime mover through the aforesaid means for effecting a tiremounting operation.

8. In a tire mounting machine a supporting frame structure including apair of trunnion-like spaced supports, a prime mover carried by saidframe structure, a tire mounting frame structure having a pair oftransversely extending cylindrical members projecting therefrom andjournaled in said trunnion-like spaced supports tiltably carried by saidsupporting frame structure one of said cylindrical members beingtubular, shaft mechanism carried by said tire mounting frame structureand tiltable from substantially horizontal position to a substantiallyvertical position, means extending through said tubular member andinterconnecting said prime mover and said tire mounting frame structurefor tilting said shaft mechanism to a substantially vertical position,tire mounting means carried by said tire mounting frame structure andspring actuated clutch mechanism for governing the tilting movement ofsaid shaft mechanism and the operation of said tire mounting means.

9. In a tire mounting machine a supporting frame includuing a pair oftrunnion-like spaced supports, a prime mover supported by said frame, atire mounting frame structure having a pair of transversely extendingcylindrical members projecting therefrom and journaled in saidtrunnionlike spaced supports, a shaft mechanism supported by said tiremounting frame structure and including a concentrically mounted innershaft and outer sleeve, one of said cylindrical members being tubular,means extending through said tubular member and operated by said primemover for rotating said inner shaft and outer sleeve in opposite angulardirections, tire mounting means operated by said shaft mechanism, andmeans interposed between the aforesaid means and said prime mover fortilting said tire mounting frame structure from a horizontal position toa vertical position.

10. In a tire mounting machine a tire casing spreader device comprisinga member for engaging the bead of a tire casing for spreading the casingwith respect to a wheel rim including a central curved surface and acam-like surface coextensive therewith and projecting on opposite sidesthereof, an angularly movable spreader arm supporting said device inalignment with the center of said central curved surface, said centralcurved surface being flanged adjacent one peripheral edge thereof forfacilitating the engagement of the bead of the tire casing and thestretching of the tire casing into engagement with a wheel mm.

11. In a tire mounting machine tire casing spreader device comprising amember for engaging the bead of a tire casing for spreading the casingfor application to a wheel rim comprising a central curved surface and acam-like surface co-extensive therewith and projecting in oppositedirections therefrom and curved on the extremity thereof in a contoursubstantially in conformity with the direction of the path of movementthereof, an angularly movable spreader arm supporting said device inradial alignment with the center of said central curved surface, saidcentral curved surface forming a shaped terminus member adjacent saidcam-like surface for facilitating the engagement of the tire casing andthe stretching of the tire casing over a Wheel rim.

JOHN HERB EBERLY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 595,548 Rodgers Dec. 14, 1897668,067 Stutsman Feb. 12, 1901 1,977,297 Weaver Oct. 16, 1934 2,201,982Bazarek May 28, 1940 2,213,535 Seip Sept. 3, 1940 2,349,552 Holmes May23, 1944 2,437,512 Ekse Mar. 9, 1948 2,439,615 Smith Apr. 13, 1948FOREIGN PATENTS Number Country Date 403,591 France Sept. 28, 1909

